Results 191 to 200 of about 15,856 (229)
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Diel vertical migration of sablefish (Anoplopoma fimbria)
Fisheries Oceanography, 2019AbstractTo investigate their diel vertical migration (DVM), 599 sablefish (Anoplopoma fimbria) were implanted with electronic archival tags in the Gulf of Alaska, Aleutian Islands, and the eastern Bering Sea. Of these tags, 98 were recovered with usable depth data (7,852,773 recordings representing 81,233 days) that we used to identify DVM and to ...
Michael F. Sigler, Katy B. Echave
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Control Mechanisms of Diel Vertical Migration: Theoretical Assumptions
Journal of Theoretical Biology, 2001We explore control mechanisms underlying the vertical migration of zooplankton in the water column under the predator-avoidance hypothesis. Two groups of assumptions in which the organisms are assumed to migrate vertically in order to minimize realized or effective predation pressure (type-I) and to minimize changes in realized or effective predation ...
B P, Han, M, Straskraba
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Partial diel vertical migrations in pelagic fish
Journal of Animal Ecology, 20111. Field studies on diel vertical migration (DVM) usually report uniform behaviour with population-wide ascents and descents during crepuscular periods. This contrasts partial seasonal migrations of many animal populations, where individuals choose either the resident or the migrant strategy depending on population density, feeding opportunity and ...
Thomas Mehner, Peter Kasprzak
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Zooplankton diel vertical migration during Antarctic summer
Deep Sea Research Part I: Oceanographic Research Papers, 2020Abstract Zooplankton diel vertical migration (DVM) during summer in the polar oceans is presumed to be dampened due to near continuous daylight. We analyzed zooplankton diel vertical distribution patterns in a wide range of taxa along the Western Antarctic Peninsula (WAP) to assess if DVM occurs, and if so, what environmental controls modulate DVM in
John A. Conroy +3 more
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Diel vertical migrations of bathypelagic perch fry
Journal of Fish Biology, 2005The behaviour of young‐of‐the‐year (YOY) perchPerca fluviatilisas a dominant species in the assemblage of fry in the pelagic of Slapy Reservoir (Czech Republic), was studied during late May and mid‐June 2002 using acoustic methods and complementary net catches.
M. Čech +4 more
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Not Being Eaten I: Diel Vertical Migration
2023Abstract Early near-surface zooplankton sampling revealed more of many species being caught at night than in daylight. Hypotheses abounded, several still current. For many species the answer is daily (“diel”) vertical migration (DVM): down to darker waters during daylight, up to better feeding at night.
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Diel vertical migration thresholds of Karenia brevis (Dinophyceae)
Harmful Algae, 2009Abstract Light and nutrient availability change throughout dinoflagellate diel vertical migration (DVM) and/or with sub-population location in the water column along the west Florida shelf. Typically, the vertical depth of the shelf is greater than the distance a sub-population can vertically migrate during a diel cycle, limiting the ability of a sub-
Blake A. Schaeffer +4 more
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Ciliate vertical distribution and diel vertical migration in a eutrophic lake
Fundamental and Applied Limnology, 2008The diel vertical migration (DVM) behaviour of a heterotrophic ciliate community was monitored in a eutrophic gravel pit lake located near the lower Rhine in Germany. The purpose of the study was to determine whether DVM in ciliates occurred, if this behaviour was species-specific, and to examine factors (predator avoidance, location of prey ...
Marcelo Rossberg, Stephen A. Wickham
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Diel Vertical Migration in Lakes
2009Diel vertical migration of zooplankton in lakes has often been described and is obviously a common phenomenon. Most studies were confined to a few days, few sample times and depths. Therefore, most papers are rather anecdotal, lacking sufficient details to get insight into temporal development and underlying mechanisms.
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